| Size | Recommended Height (cm) | Top Tube Length (B) (mm) | Seat Tube Length (A) (mm) | Seat Tube Angle (E) | Head Tube Angle (F) | Standover Height (H) (mm) | Wheelbase (WB) (mm) |
|---|---|---|---|---|---|---|---|
| XS | 150-160 cm | 511 | 420 | 74.5° | 70° | 110 | 1002 |
| S | 160-170 cm | 522 | 450 | 75.25° | 70.75° | 130 | 1005 |
| M | 170-180 cm | 539 | 480 | 74° | 71° | 130 | 1018 |
| L | 180-190 cm | 556 | 500 | 73.75° | 71.25° | 170 | 1030 |
| XL | 190-200 cm | 573 | 520 | 72.5° | 71.25° | 170 | 1045 |
Shipping Estimate
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- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 7 - Jul 12
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Description
gravel bike grx 400 RINOS Carbon Gravel Bike Sandman4.0 Shimano GRX400 – Rinosbike.euRinos Sandman 4. Gravel Rediscovered. Ready for bikepacking. Unmatched Comfort in long rides. Shimano GRX 400 Shifting System Lightweight, only 9. 8 kg. Full Shimano Hydraulic Brakes Equipped with a High Quality Carbon Frame The frame and fork are crafted from TORAY T800 carbon, providing both lightweight durability and exceptional performance. The RINOS carbon handlebar paired with an aluminum headset ensures stable, reliable riding. Lightweight and
Rinos Sandman 4.
Gravel Rediscovered.
Equipped with a High-Quality Carbon Frame
The frame and fork are crafted from TORAY T800 carbon, providing both lightweight durability and exceptional performance. The RINOS carbon handlebar paired with an aluminum headset ensures stable, reliable riding.
Lightweight and Versatile for All Riders
Available in five sizes (50-58 cm), the Sandman4.0 is ideal for riders from 155 cm to over 195 cm in height. Weighing only 9.8 kg, this bike is perfect for long adventures, with a comfortable ROCKBROS saddle for an enjoyable ride.
Complete Shimano GRX Shifting System
The bike's 20-speed (2x10) SHIMANO GRX 400 RD-RX400 rear derailleur, paired with the 11-34T cassette, delivers quick and precise gear changes over a wide range of conditions.
Wider Tires for Every Adventure
With lightweight RINOS rims and NOVATEC rear hubs, the Sandman4.0 offers rapid acceleration and superb traction on diverse terrains, thanks to its CST 700x40C tires with sidewall protection.
Full Hydraulic Braking System
Equipped with full hydraulic disc brakes, this bike provides confidence-inspiring stopping power on both ascents and descents.
Easy Assembly for Quick Rides
The Sandman4.0 comes nearly fully assembled, including tools and an easy-to-follow manual for setup and maintenance, making it your go-to for any terrain.
Specifications
Model: Sandman4.0
Manufacturer: RINOS
Color: Black Green / Black Sand / Gold / Blue
Wheel Size: 28 inches (700c)
Frame Size: 50cm / 52cm / 54cm / 56cm / 58cm
Item Weight: 9.8 kg (may vary depending on frame size)
Mounting Points: 26Frame: RINOS, Toray T800 Carbon
Fork: RINOS, Toray T800 Carbon
Handlebar: RINOS, Carbon, 420/440*28.6 mm
Headset: RINOS, Aluminum, 1-1/8" 28.6*52*52*39.8 mm
Seat Post: RINOS, Carbon 27.2*400 mm
Saddle: ROCKBROS
Shifters: Shimano GRX 400 ST-RX400, 20 speeds
Rear Derailleur: Shimano GRX RD-RX400
Brakes: Shimano GRX 400 Hydraulic Brakes
Cassette: Shimano CS-HG500-10 11-34T
Crankset: Shimano GRX FC-RX600 46-30T
Chain: Shimano 10-speed
Wheels: RINOS, 28" 700C*28H*14G, 38 mm
Rims: Aluminum 700C*14G*28H F/V, 14*38 mm
Hubs: Novatec 28H*14G
Tires: CST 700*40C with sidewall (60 mm Presta valve)
Accessories: Tools, User Manual
Size Chart
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.0 ★★★★★
Based on 582 reviews
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Product Reviews
★★★★★ 4
Very soft and cool.
Color: Dark Gray, Size: Queen
Very comfortable and cooling. But after a couple of washes the stitching starts to unravel.
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Reviewed in the United States on May 3, 2026
★★★★★ 5
Love them
Color: Black, Size: Standard
I LOVE THESE PILLOW CASES. I love the zipper so it stays on the pillow, how it stays cool, and the fabric. Worth it 100%
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Reviewed in the United States on June 5, 2026
★★★★★ 5
BUY IT!!
Color: Light Gray, Size: Standard
Love the material super soft and smooth like silk. It’s also nice and cold for when I got to bed! Definitely recommend
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Reviewed in the United States on June 3, 2026
★★★★★ 5
Actually feels cool at night
Color: Light Gray, Size: Standard
I’ve been using these for several days now and I did notice a difference. I tend to get hot while sleeping, so I was curious if they would actually help, and they do feel cool when you lay on them. I also like that they’re soft and comfortable, not that weird texture some “cooling” products have. So far, I’ve been really happy with them.
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Reviewed in the United States on May 23, 2026
★★★★★ 5
It works! Quality pillow.
Size: Standard (1 Count), Color: Original White (Cooling)
This does actually provide a cooling effect, and it's very comfortable! The accompanying literature is helpful too. I believe this to be a quality pillow for the price.
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Reviewed in the United States on June 2, 2026